101st Battalion may refer to:
101 Battalion (Libya), a military insurgent unit 101 Battalion (South Africa), a unit of the South West Africa Territorial Force 101st Battalion (Winnipeg Light Infantry), CEF, a unit of the Canadian Expeditionary Force 101st Engineer Battalion, a unit of the US Army 101st Infantry Battalion, a former unit of the US Army 101st Signal Battalion, a unit of the US Army Reserve Police Battalion 101, a Nazi German paramilitary formation of Ordnungspolizei 101st Battalion (Israel), a unit in the 35th Paratroopers Brigade
See also 101st Division (disambiguation) 101st Brigade (disambiguation) 101st Regiment (disambiguation) 101 Squadron (disambiguation)